[1
]
Division of Gastroenterology, Department of Translational Research and New Technologies
in Medicine and Surgery, University of Pisa, Pisa, Italy.
[2
]
Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology,
University of Padua, Padua, Italy.
[3
]
Gastroenterology Unit, Department of Internal Medicine, Northwest University, Chicago,
IL, USA.
[4
]
Division of Surgery, Department of Surgery, Second University of Naples, Naples, Italy.
[5
]
Gastroenterology Unit, University Hospital of Bern, Bern, Switzerland.
[6
]
Digestive Physiology, Hospices Civil de Lyon and Lyon I University, Lyon, France.
[7
]
Division of Gastroenterology, Department of Internal Medicine (DIMI), University of
Genoa, Genoa, Italy.
[8
]
Gastroenterology Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy.